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Alex Chapin

PROFILE

Alex Chapin

Andrew Chapin engineered robust build automation and CI/CD workflows for the NREL/OpenStudio repository, focusing on cross-platform reliability and artifact reproducibility. He modernized Windows and macOS testing pipelines, enhanced incremental build workflows with Docker and CMake, and improved test result visibility through automated dashboards and reporting. Leveraging Python, Shell scripting, and Jenkins, Andrew streamlined dependency management and packaging, including secure artifact delivery for OpenStudio gem releases. His work addressed both feature delivery and bug resolution, such as stabilizing Jenkins pipeline dependencies and refining emission code mappings in SEED-platform/seed, demonstrating depth in DevOps, workflow automation, and build system configuration across complex environments.

Overall Statistics

Feature vs Bugs

56%Features

Repository Contributions

107Total
Bugs
14
Commits
107
Features
18
Lines of code
1,550
Activity Months4

Work History

October 2025

2 Commits • 1 Features

Oct 1, 2025

Monthly summary for 2025-10 (NREL/OpenStudio): CI/CD feature delivery and stability improvements via Jenkins Pipeline Shared Library Version Management. Implemented pinning to a bug-fix version to ensure stable builds, with an exploratory path to default to the latest stable to capture new fixes. Commits included: 64553126e133823c2d6dc185c97dc9c6376b2769 (Update Jenkins library reference to fix-bug version) and 6424d087d229d3c5704973ba725cba0a5d364c0e (Remove specific version reference from Jenkins library to use the latest stable version).

June 2025

101 Commits • 15 Features

Jun 1, 2025

June 2025 monthly summary for NREL/OpenStudio: Cross-platform CI enhancements paired with packaging and build reliability improvements that collectively accelerate release cycles and improve stability. Key outcomes include packaging RC2 updates for OpenStudio gems, modernization of Windows and macOS CI workflows, incremental build workflow robustness with volume path fixes and debugging utilities, and enhanced visibility through test results dashboards and publishing.

May 2025

3 Commits • 2 Features

May 1, 2025

May 2025: NREL/OpenStudio delivered two focused feature updates and reinforced build reliability around artifact delivery. Key work centered on updating gem delivery for RC1 and May 2025 release artifacts, with traceable commits for auditability. Key features delivered: - OpenStudio Gems RC1 upgrade to v3.10.0-RC1: update build to fetch OpenStudio gems from RC1 v3.10.0; adjust URLs and download logic accordingly. Commits: 9a1c02488ee1692ca42f19791af734bdadc110d5; da728d3f6c88f0a12daac727ef2b855a63fb1d43. - Gem packaging and checksums updated for May 23, 2025 release: update gem package filenames and MD5 checksums to reflect May 23, 2025 release; commit: 942779cab89d34a9e3d6ea76914658eab39f7263. Major bugs fixed: - No major bugs fixed this month; focus remained on feature delivery and build integrity. Overall impact and accomplishments: - Improved build reliability and artifact reproducibility, enabling safer downstream consumption of RC1 features and May 2025 release artifacts. - Reduced risk of mismatched artifacts in CI by aligning fetch logic and packaging with official release artifacts. Technologies/skills demonstrated: - Release management and artifact handling for Ruby gems - MD5 checksum validation and packaging integrity - URL handling, download logic, and build script adjustments for RC and release artifacts - CI-friendly artifact synchronization and traceability

December 2024

1 Commits

Dec 1, 2024

December 2024 monthly summary for SEED-platform/seed: focused on cleaning up emission code configuration to improve data accuracy and prevent misclassification in emission mappings across the data pipeline.

Activity

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Quality Metrics

Correctness86.8%
Maintainability89.2%
Architecture81.4%
Performance78.2%
AI Usage20.6%

Skills & Technologies

Programming Languages

C++CMakeGroovyPowerShellPythonShellYAML

Technical Skills

Build AutomationBuild System ConfigurationBuild SystemsCI/CDCMakeCachingCode RefactoringData ProcessingDebuggingDependency ManagementDevOpsDockerGitGitHub ActionsJenkins

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

NREL/OpenStudio

May 2025 Oct 2025
3 Months active

Languages Used

C++CMakeGroovyPowerShellPythonShellYAML

Technical Skills

Build System ConfigurationBuild SystemsCMakeBuild AutomationCI/CDCaching

SEED-platform/seed

Dec 2024 Dec 2024
1 Month active

Languages Used

Python

Technical Skills

Code Refactoring

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